Why not give him up for free?? Rips best days are behind him, hes very pron to injury and Kwame well ask the lakers fans about him. Moreover, IF Bosh is to be traded there is no point in keeping AB playing Centre the rational thing to do is move him to his natural spot where I believe his performance will only improve and for that we will need a defensive centre (starting centre not just a so so back up).
There are alot better scenarios to trade Bosh some including draft picks which should be a must if Bosh leaves.

Assuming Rip plays along side a strong supporting cast, I see him playing much like Ray Allen does with the Celtics. On a weak team like Detroit is now, Rip's talent is a waste. Put him with a couple all-stars again and he'll flourish.

I would love to acquire him if there was anyway we could also keep Bosh.